diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2025-06-25 21:38:31 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-06-27 21:13:12 +0300 |
| commit | 05bc6e6290f91d2d40086ab4ef52da21c14ec4b6 (patch) | |
| tree | 5902335116fad2bebb09dc191596782199711962 /include/linux | |
| parent | 9f7729480a2c771bbe49b7eab034a8eaa5e27bfb (diff) | |
| download | linux-05bc6e6290f91d2d40086ab4ef52da21c14ec4b6.tar.xz | |
timekeeping: Provide time getters for auxiliary clocks
Provide interfaces similar to the ktime_get*() family which provide access
to the auxiliary clocks.
These interfaces have a boolean return value, which indicates whether the
accessed clock is valid or not.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/all/20250625183757.868342628@linutronix.de
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/posix-timers.h | 5 | ||||
| -rw-r--r-- | include/linux/timekeeping.h | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index dd48c64b605e..4d3dbcef379e 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -37,6 +37,11 @@ static inline int clockid_to_fd(const clockid_t clk) return ~(clk >> 3); } +static inline bool clockid_aux_valid(clockid_t id) +{ + return IS_ENABLED(CONFIG_POSIX_AUX_CLOCKS) && id >= CLOCK_AUX && id <= CLOCK_AUX_LAST; +} + #ifdef CONFIG_POSIX_TIMERS #include <linux/signal_types.h> diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 542773650200..de9a3b7d7d0d 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -263,6 +263,17 @@ extern bool timekeeping_rtc_skipresume(void); extern void timekeeping_inject_sleeptime64(const struct timespec64 *delta); +/* + * Auxiliary clock interfaces + */ +#ifdef CONFIG_POSIX_AUX_CLOCKS +extern bool ktime_get_aux(clockid_t id, ktime_t *kt); +extern bool ktime_get_aux_ts64(clockid_t id, struct timespec64 *kt); +#else +static inline bool ktime_get_aux(clockid_t id, ktime_t *kt) { return false; } +static inline bool ktime_get_aux_ts64(clockid_t id, struct timespec64 *kt) { return false; } +#endif + /** * struct system_time_snapshot - simultaneous raw/real time capture with * counter value |